J. Marcos Alonso;Guirguis Z. Abdelmessih;Marco A. Dalla Costa;Yueshi Guan;Yijie Wang
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引用次数: 0
Abstract
This paper investigates the use of switched capacitor converters to implement DC-supplied LED drivers with PWM dimming functionality. A voltage doubler switched capacitor converter is selected as an example of LED driver implementation. The converter is analyzed, and the main characteristics and equivalent circuits are obtained. The current waveform of the switched capacitor is calculated considering the stray inductance of the converter. The implementation of PWM dimming in this type of LED driver is also investigated. A 44-W laboratory prototype operating at 100 kHz switching frequency and 25 kHz dimming frequency has been developed to verify the theoretical analysis and evaluate the operation of the LED driver.
期刊介绍：
The scope of the IEEE Transactions on Industry Applications includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.
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